dana 44 help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

403oldsman · 09-12-2005, 11:30 AM

Heres what happened my brother was pulling out some trees with m,y truck and he twisted off the left fornt u-joint. I was lloking it over trying to fiqure out why it broke . The font has a lockering in it could that be why? The front left axle acts like it isnt connected to the carrier and it just spins with out moveing the driveshaft or the other axle. But when he was pulling the tree he had all four wheels spining so i dont know exactly what happen but the yokes for the u jonits are both bent and needing replace if any one could help identify what went wrong it would be greatly apriecated.

Thanks
403oldsman

**JIMs70GMC** · 09-12-2005, 11:57 AM

sounds like the inner axle broke on the driverside. but before it went the u-joint was starting to deform. time for a new inner/outer axle shaft for the driver side. Be a good time (if not all ready done) to upgrade to a larger u-joint and aftermarket axle shafts that don't neck down. The neck down part is probably where the inner axle broke. Was your brother rotating the front tires from side to side?

403oldsman · 09-12-2005, 12:09 PM

My brother calims that he had the wheels straight and that it was in the low side of first. Where do i get bigger u joints. For the axles I'll probaby just got ot a junk yard and get some. Do you think the locker had anything to do with it breaking?

Thanks
403oldsman

*72longbed* · 09-12-2005, 07:44 PM

This is just a guess, but I think that pulling trees out of the ground with your truck had a lot to do with why the front axle parts detonated!!

In my 1972 K20 factory owners manual I think it says that, "you can pull down a house with a Chevy K20", "tow an african elephant on it's back up the White House front steps with a GMC K2500", but use caution when pulling full grown trees out of the ground, driveline breakage may occur."

Just a guess,

72longbed

**JIMs70GMC** · 09-12-2005, 08:22 PM

Some breakage happens from "shock" loads while it sounds like you just reached the stress point of the material(shafts/ears). You need to find axle shafts from 73 and newer dana44, they will have the larger u-joint(297x v. 260X). I think the locker did it's job.

403oldsman · 09-13-2005, 10:58 AM

the funny thing is he did get the tree pulled out. you can see where he had all four wheels spining in the grass though.
Thanks for the help,
403oldsman

09-12-2005, 11:30 AM	#1
403oldsman Registered User Join Date: Mar 2005 Location: Van Horne, Iowa Posts: 46	dana 44 help Heres what happened my brother was pulling out some trees with m,y truck and he twisted off the left fornt u-joint. I was lloking it over trying to fiqure out why it broke . The font has a lockering in it could that be why? The front left axle acts like it isnt connected to the carrier and it just spins with out moveing the driveshaft or the other axle. But when he was pulling the tree he had all four wheels spining so i dont know exactly what happen but the yokes for the u jonits are both bent and needing replace if any one could help identify what went wrong it would be greatly apriecated. Thanks 403oldsman __________________ THERE is NO REPLACEMENT FOR DISPLACEMENT 1971 CHEVY 4X4 4SPD 406 CHEVY Lockers front and back 1978 BONNEVILLE 403 OLDS 1985 K1500 F5L912 Deutz Power (work in progress) http://67-72chevytrucks.com/vboard/s...d.php?t=389561 1963 Oliver 1600 diesel 1956 Oliver Super 88

09-12-2005, 11:57 AM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	sounds like the inner axle broke on the driverside. but before it went the u-joint was starting to deform. time for a new inner/outer axle shaft for the driver side. Be a good time (if not all ready done) to upgrade to a larger u-joint and aftermarket axle shafts that don't neck down. The neck down part is probably where the inner axle broke. Was your brother rotating the front tires from side to side? __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

09-12-2005, 12:09 PM	#3
403oldsman Registered User Join Date: Mar 2005 Location: Van Horne, Iowa Posts: 46	My brother calims that he had the wheels straight and that it was in the low side of first. Where do i get bigger u joints. For the axles I'll probaby just got ot a junk yard and get some. Do you think the locker had anything to do with it breaking? Thanks 403oldsman __________________ THERE is NO REPLACEMENT FOR DISPLACEMENT 1971 CHEVY 4X4 4SPD 406 CHEVY Lockers front and back 1978 BONNEVILLE 403 OLDS 1985 K1500 F5L912 Deutz Power (work in progress) http://67-72chevytrucks.com/vboard/s...d.php?t=389561 1963 Oliver 1600 diesel 1956 Oliver Super 88

09-12-2005, 07:44 PM	#4
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	This is just a guess, but I think that pulling trees out of the ground with your truck had a lot to do with why the front axle parts detonated!! In my 1972 K20 factory owners manual I think it says that, "you can pull down a house with a Chevy K20", "tow an african elephant on it's back up the White House front steps with a GMC K2500", but use caution when pulling full grown trees out of the ground, driveline breakage may occur." Just a guess, 72longbed Last edited by 72longbed; 09-12-2005 at 07:48 PM.

09-12-2005, 08:22 PM	#5
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Some breakage happens from "shock" loads while it sounds like you just reached the stress point of the material(shafts/ears). You need to find axle shafts from 73 and newer dana44, they will have the larger u-joint(297x v. 260X). I think the locker did it's job. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

09-13-2005, 10:58 AM	#6
403oldsman Registered User Join Date: Mar 2005 Location: Van Horne, Iowa Posts: 46	the funny thing is he did get the tree pulled out. you can see where he had all four wheels spining in the grass though. Thanks for the help, 403oldsman __________________ THERE is NO REPLACEMENT FOR DISPLACEMENT 1971 CHEVY 4X4 4SPD 406 CHEVY Lockers front and back 1978 BONNEVILLE 403 OLDS 1985 K1500 F5L912 Deutz Power (work in progress) http://67-72chevytrucks.com/vboard/s...d.php?t=389561 1963 Oliver 1600 diesel 1956 Oliver Super 88



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